Qur’an: Islam’s Holy Book
The Qur’an literally means “the recitation”, and in English is also sometimes transliterated as Quran, Qur’ān, Koran, Alcoran or Al-Qur’ān. The Quran is the central religious text of Islam and is the book of divine guidance and direction for mankind. It is the final revelation of God, and there will be no more revelations after it.
HOW THE QUR’AN WAS SENT TO US
The Holy Qur’an was revealed to Prophet Muhammad peace be upon him by the angel Jibrīl (Gabriel) over a period of approximately 23 years, beginning in 610 CE, when the Prophet was forty, and concluding in 632 CE, the year of his death. The Qur’an was written down by the Prophet’s companions while he was alive, although the primary method of transmission was oral. It was fixed in writing shortly after Prophet Muhammad’s death by order of the caliphs Abu Bakr and Umar, and that their orders began a process of formalization of the orally transmitted text that was completed under their successor Uthman with the standard edition known as the “Uthmanic recension.” The present form of the Qur’an is accepted by most scholars as the original version authored or dictated by Muhammad.
ref: The meaning of Islam